Task is a task runner / build tool that aims to be simpler and easier to use than, for example, GNU Make.
Having Task installed is not a hard-requirement for developing. It is mainly used to collect common scripts / commands.
It can be installed Homebrew (other options are available as well).
brew install go-task
Task is configured via Taskfile.yaml.
When adding new tasks to the task file, try to keep individual tasks simple and small. More complicated things should be put into individual scripts and then just called from Task.
task --list
task <task>